. >> the three suspects, antonio rivera, his sister jasmine rivera, and bar manager john whaley were arrested and charged with sex trafficking and forced labor. they could all face life in prison. >>> also tonight, to milwaukee. a grandfather found dead on a living room floor, stabbed to death. the suspect, his granddaughter. motive? police say she stabbed him, literally, over spilled milk. >> a 13-year-old girl, arrested. after police say she stabbed a relative to death. allegedly over spilled milk. >> family and friends say the 41-year-old man who was killed by the 13-year-old girl is robert moon. he was the girl's step-grandfather. family members told us the girl was arguing with moon in his home, because she wanted to know why little milk was left for her cereal. >> police say the 13-year-old girl, enraged, when the victim robert moon uses almost all of the remaining milk. pouring it for the youngest child in the home. after the alleged teen killer curses at moon, he pours the milk down the drain. she allegedly stabbing moon in the neck, puncturing his carotid artery. >> the youn